CN105347745A - Novel high-strength self-compacting concrete - Google Patents
Novel high-strength self-compacting concrete Download PDFInfo
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- CN105347745A CN105347745A CN201510821146.7A CN201510821146A CN105347745A CN 105347745 A CN105347745 A CN 105347745A CN 201510821146 A CN201510821146 A CN 201510821146A CN 105347745 A CN105347745 A CN 105347745A
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Abstract
The invention discloses novel high-strength self-compacting concrete including the following raw materials in parts by weight: 3 parts of basalt fibers, 4 parts of glass fibers, 100 parts of cement, 160 parts of fly ash, 800 parts of gravels with the particle size of 10-15 mm, 250 parts of gravels with the particle size of 15-20 mm, 500 parts of sand, 150 parts of water, 10 parts of bentonite, 0.5 part of a super plasticizer, 1 part of an air entraining agent, 0.1 part of a defoaming agent, 0.4 part of a rosin thermopolymer, 0.02 part of a tackifier, 0.4 part of sodium dodecyl sulfate, and 0.4 part of calcium stearate. The novel high-strength self-compacting concrete makes full use of characteristics of all the raw materials, the strength of the prepared concrete is greatly improved and is improved by 50% or more compared with concrete of the prior art, the concrete can be specially used for precast reinforced concrete hollow square piles, and the single-pile bearing capacity of the prepared square piles is higher.
Description
Technical field
The present invention relates to a kind of novel high-strength self-compacting concrete.
Background technology
Concrete is a kind of material of construction full of vitality.Along with the development of component materials of concrete, people improve constantly Material cladding technology understanding.Not only ultimate compression strength is confined to concrete performance requriements, but on the basis basing oneself upon intensity, more focuses on the balance and coordination of the overall targets such as concrete weather resistance, deformation performance.The requirement of concrete property indices is than clearer and more definite, refinement in the past and concrete.Meanwhile, the lifting of Architectural Equipment level, the continuing to bring out and promoting of novel construction process, concrete technology is adapted to different designs, construction and service requirements, develops very fast.
Along with the quickening of industrial development and urbanization process, concrete also becomes the preferred material of the buildings such as road, dam and bridge.Novel high-strength self-compacting concrete has that intensity is high, mobility is large, early strength is high, good endurance and quality are light, the feature of material-saving Be very effective, the work of external advanced country research promotion high-strength concrete has carried out decades, and the starting late of China's Development of Novel high strength self-compacting concrete, current concrete intensity can not meet the requirement of society.
Along with the continuous propelling of China's urban development construction process, gradually reducing of the idle land area in urban district, cause buildings longitudinally short transverse significantly improve, plane figure is significantly compressed, in urban district, adjacent buildings spacing constantly reduces, and has higher requirement to the Design of Foundation of buildings and construction.
Current East China-Shanghai, Jiangsu, zhejiang and other places Pile Foundations Design adopt more pile foundation type to have cast-in place pile, prestressed concrete pipe pile and Prefabricated Reinforced Concrete Square Pile.It is high that cast-in place pile has bearing capacity of single pile, the feature less on surrounding enviroment impact, but it is various to have construction technology link simultaneously, the shortcomings such as operating efficiency is low, long in time limit, mechanical execution noise is large, the problems such as mud drilling construction and discharge are also very serious to the pollution of environment.Prestressed concrete pipe pile and Prefabricated Reinforced Concrete Square Pile, technological characteristics of construction is that mechanical execution efficiency is higher, and working-yard civilized construction is effective, adopts static pressure construction pollution from environmental noise less.But these two kinds of techniques have common shortcoming to be that bearing capacity of single pile is low, and soil extrusion in construction effect is comparatively large, must take into full account the protection to peripheral path pipeline and Nearby Structure during construction.These two kinds of pile-type are compared, and it is very low that prestressed concrete pipe pile bears horizontal loading ability, shearing resistance weak effect, and precast square pile is except bearing vertical load, and also can bear part horizontal loading, soil compaction effect pile tube is more a shade better again than square pile simultaneously.Several technique respectively has quality.
Therefore, need a kind of novel high-strength self-compacting concrete to solve the problem.
Summary of the invention
Goal of the invention: the defect that the present invention is directed to novel high-strength self-compacting concrete in prior art, provides a kind of novel high-strength self-compacting concrete of excellent property.
Technical scheme: for solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of novel high-strength self-compacting concrete, comprises the raw material of following composition by weight: basalt fibre 3 parts, 4 parts, glass fibre, cement 100 parts, 160 parts, flyash, 10-15mm Stone 800 parts, 15-20mm rubble 250 parts, 500 parts, sand, 150 parts, water, wilkinite 10 parts, superplasticizer 0.5 part, air entrapment agent 1 part, defoamer 0.1 part, colophonium pyrolytic polymer 0.4 part, tackifier 0.02 part, sodium lauryl sulphate 0.4 part and calcium stearate 0.4 part.
Further, described basalt fibre length is 6-20mm, and filament diameter is 7-15um.
Further, described glass fibre is AR glass fibre.AR glass fibre is also known as alkali resistant glass fibre, and alkali resistant glass fibre is the rib material of glass fiber reinforcement (cement) concrete (being called for short GRC), and be 100% inorganic fibre, be the ideal substitute of steel and asbestos in nonweight-bearing cement components.The feature of alkali resistant glass fibre is that alkali resistance is good, be highly resistant to the erosion of high alkaloid substance in cement, bond stress is strong, Young's modulus, shock resistance, tension, bending strength are high, do not fire, freeze proof, resistance to temperature, humidity changing capability be strong, cracking resistance, anti-permeability performance are remarkable, have designability strong, the features such as easy-formation, alkali resistant glass fibre is a kind of novel environmental type strongthener.
Inventive principle: novel high-strength self-compacting concrete of the present invention is a kind of high performance concrete with features such as high workability, high fillibility, high education resistances, is suitable for prefabricated reinforced concrete hollow square pile.Meticulous mix-design is carried out by selecting gelling material, different thicknesses aggregate and high performance additive, the shearing stress that concrete yielding stress being reduced to is enough to by producing because of deadweight overcomes, concrete flowability is increased, but there is not segregation and bleeding problem, space in the abundant filling template of energy, forms closely knit and uniform jelling structure.
Basalt fibre and glass fibre coordinate, and take full advantage of the characteristic of basalt fibre and glass fibre.Concrete tensile modulus and shearing resistance are had significantly improve.
Wherein, have employed the combination of superplasticizer, wilkinite, air entrapment agent, rosined soap, calcium stearate and Amino-sulfonic Acid-based Water-reducer, it can produce has good workability, i.e. high workability, water-retentivity, cohesiveness, be more convenient for pour into a mould chutable concrete, but do not reduce the additive of cement consumption and intensity, and can greatly improve concrete intensity.
Beneficial effect: novel high-strength self-compacting concrete of the present invention makes full use of the characteristic of each raw material, the concrete strength prepared is improved greatly, its intensity has the lifting of more than 50% compared to the concrete of prior art, can be specifically designed to prefabricated reinforced concrete hollow square pile, the square pile bearing capacity of single pile utilizing it to prepare is higher.
Embodiment
Below in conjunction with embodiment, the present invention is further described.Below be only better embodiment of the present invention; protection scope of the present invention is not limited with above-mentioned embodiment; in every case those of ordinary skill in the art modify or change according to the equivalence that disclosed content is done, and all should include in the protection domain recorded in claims.
embodiment 1
Novel high-strength self-compacting concrete, comprises the raw material of following composition by weight: basalt fibre 3 parts, 4 parts, glass fibre, cement 100 parts, 160 parts, flyash, 10-15mm Stone 800 parts, 15-20mm rubble 250 parts, 500 parts, sand, 150 parts, water, wilkinite 10 parts, superplasticizer 0.5 part, air entrapment agent 1 part, defoamer 0.1 part, colophonium pyrolytic polymer 0.4 part, tackifier 0.02 part, sodium lauryl sulphate 0.4 part and calcium stearate 0.4 part.Basalt fibre length is 6-20mm, and filament diameter is 7-15um, and glass fibre is AR glass fibre.
Prepared by following steps:
(1) raw material comprising following composition by weight, is taken: the raw material comprising following composition by weight: basalt fibre 3 parts, 4 parts, glass fibre, cement 100 parts, 160 parts, flyash, 10-15mm Stone 800 parts, 15-20mm rubble 250 parts, 500 parts, sand, 150 parts, water, wilkinite 10 parts, superplasticizer 0.5 part, air entrapment agent 1 part, defoamer 0.1 part, colophonium pyrolytic polymer 0.4 part, tackifier 0.02 part, sodium lauryl sulphate 0.4 part and calcium stearate 0.4 part;
(2), first it is made to mix 3 parts of basalt fibres, 800 parts of 10-15mm Stones, 250 parts of 15-20mm rubbles and 500 parts of sand stirrings;
(3), by 100 parts of cement, 160 parts of flyash and 100 parts of water stirring makes it mix, and is then added in the mixing material that step (2) obtains, stirs and make it mix;
(4), by 10 parts of wilkinites, 0.5 part of superplasticizer, 1 part of air entrapment agent, 0.1 part of defoamer, 0.4 part of colophonium pyrolytic polymer, 0.02 part of tackifier, 0.4 part of sodium lauryl sulphate, 0.4 part of calcium stearate and 60 parts of water add in the mixing material that step (2) obtains, stir and make it mix;
(5), then 4 parts of glass fibre add in the mixing material that step (4) obtains, stir and make it mix, obtain novel high-strength self-compacting concrete of the present invention.
Inventive principle: novel high-strength self-compacting concrete of the present invention is a kind of high performance concrete with features such as high workability, high fillibility, high education resistances, is suitable for prefabricated reinforced concrete hollow square pile.Meticulous mix-design is carried out by selecting gelling material, different thicknesses aggregate and high performance additive, the shearing stress that concrete yielding stress being reduced to is enough to by producing because of deadweight overcomes, concrete flowability is increased, but there is not segregation and bleeding problem, space in the abundant filling template of energy, forms closely knit and uniform jelling structure.
Wherein, have employed the combination of superplasticizer, wilkinite, air entrapment agent, rosined soap, calcium stearate and Amino-sulfonic Acid-based Water-reducer, it can produce has good workability, i.e. high workability, water-retentivity, cohesiveness, be more convenient for pour into a mould chutable concrete, but do not reduce the additive of cement consumption and intensity, and can greatly improve concrete intensity, be more suitable for prefabricated reinforced concrete hollow square pile.
After tested: the intensity of novel high-strength self-compacting concrete: 3 days intensity is 34MPa, 28 days intensity is 70MPa.
Claims (3)
1. a novel high-strength self-compacting concrete, it is characterized in that, comprise the raw material of following composition by weight: basalt fibre 3 parts, 4 parts, glass fibre, cement 100 parts, 160 parts, flyash, 10-15mm Stone 800 parts, 15-20mm rubble 250 parts, 500 parts, sand, 150 parts, water, wilkinite 10 parts, superplasticizer 0.5 part, air entrapment agent 1 part, defoamer 0.1 part, colophonium pyrolytic polymer 0.4 part, tackifier 0.02 part, sodium lauryl sulphate 0.4 part and calcium stearate 0.4 part.
2. novel high-strength self-compacting concrete as claimed in claim 1, it is characterized in that, described basalt fibre length is 6-20mm, and filament diameter is 7-15um.
3. novel high-strength self-compacting concrete as claimed in claim 1, it is characterized in that, described glass fibre is AR glass fibre.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510821146.7A CN105347745A (en) | 2015-11-24 | 2015-11-24 | Novel high-strength self-compacting concrete |
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| CN201510821146.7A CN105347745A (en) | 2015-11-24 | 2015-11-24 | Novel high-strength self-compacting concrete |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106316286A (en) * | 2016-08-18 | 2017-01-11 | 安徽省双龙木质纤维素有限公司 | Wood fiber mixture applied to highway cement aggregate |
| CN109774267A (en) * | 2019-03-22 | 2019-05-21 | 广州市帝东环保科技有限公司 | A kind of environmental-friendly construction material with long service life and preparation method thereof |
| CN111606615A (en) * | 2020-05-20 | 2020-09-01 | 闫志伟 | Formula and preparation method of C40 self-compacting concrete |
-
2015
- 2015-11-24 CN CN201510821146.7A patent/CN105347745A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106316286A (en) * | 2016-08-18 | 2017-01-11 | 安徽省双龙木质纤维素有限公司 | Wood fiber mixture applied to highway cement aggregate |
| CN109774267A (en) * | 2019-03-22 | 2019-05-21 | 广州市帝东环保科技有限公司 | A kind of environmental-friendly construction material with long service life and preparation method thereof |
| CN111606615A (en) * | 2020-05-20 | 2020-09-01 | 闫志伟 | Formula and preparation method of C40 self-compacting concrete |
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Application publication date: 20160224 |
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| WD01 | Invention patent application deemed withdrawn after publication |